Hanger for electric lamps



H C. HENLBY.

Patented July 10, 1894.

jg W j me Noms paens co. Pnoauwo.. WASHINGTON, D, c:

(No Model.)

HANGER FOR ELECTRIC LAMPS.

UNITED STATES PATENT OFFICE.

HENRY O. HENLEY, OF ST. LOUIS, MISSOURI.

HANCIR FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 522,896, dated July 1o,1894.

reputation tied Jury 27,1393. smart. 431.590. (roman.)

To @ZZ wwm t may concern:

Be it known thatv I, HENRY O. HENLEY, ot the city ot' St. Louis, in theState of Missouri, have invented a certain new. and useful Improvementin Hangers for Electric Lamps,of

which the following is a full, clear, and exact description, referencebeing had to the accompanying drawing, forming part of thisspecification.

The object of my invention is to provide a hanger for electric lampsadapted for application to a pendent gas pipe, or other such pipe in theceiling of a room,or similar position; my said hanger affording completeinsulation between the house pipe system and the electric lamp.

A further object of my invention isl to prevent bridging orshort-circuiting by the passage, from one partot the hanger to theother, of the water, which commonly condenses in gas pipes.

The accompanying drawing is a vertical section of my improved hanger.

A represents a coupling pipe with an internal screw threada, adapted forapplication to a common gas terminal, an external screw thread a', forthe reception and retention of the insulator, presently to be described,and at its lower end an annular shoulder or collar a2, and a bevel a3.

B represents the external shell or lower part of my improved hanger,which is provided at its lower end with a screw thread b, for thereception of the electric lamp xtures, an internal screw thread b', andan inturned flange b2 at its upper end which is spun'or swaged down inthe form shown after the parts are assembled.

Within the shell B between the lower end of the pipe A and the lower endof the shell is provided a chamber b4 into which the pipe A dischargesmoisture beneath the insulating material out of reach of the latter.

O represents a compact body of fibrous insulating material, made inannular formA to receive the coupling pipe A, and fitting tightly in thescrew threads a. and b on saidcoupling and within the shell B of thehanger. The insulator() is also formed; with an annu.A

lar recess to it the collar a2 of the coupling pipe, upon which it isfirmly seated, and it is provided, near its upper end, with an annulargroove or shoulder in which the inturned flange b2 of the shell Bengages, so as to afford secure vertical support or suspension to thelamp and fixtures. 'In the lower end of the insulator O is formed anannular groove or recess c, to prevent the creeping or passage of waterby capillary attraction from the lower end of the coupling A over thesurface of the insulator, so as by any possibility to form a bridge or.short-circuit between the coupling A and the shell B.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

l. The combination of the externally screwk threaded pipe A, theinternally screw threaded shell B, having a chamber b4 into which thepipe A discharges moisture and the annular insulator O fitting upon thepipe A and within the shell B out of reach of the moisture dischargedfrom the pipe A; substantially as described.

2. The combination of the coupling pipe A, and shell B having a chamberb4 into which the pipe A discharges moisture of an interposed insulatorC, out of reach of the moisture passing through the pipe A, having acavity or recess c in its lower end to prevent the passage of waterbetween the pipeA and shell B; substantially as described.

3. A hanger for electric lamps comprising a suspension pipe A, formedwith an annular shoulder a2 at its lower end and an external screwthread a', an external shell B formed with an inturned lian ge b2 atitsk upper end, and an internal screw thread b', and a compact body O ofinsulating material fitting be tween the screw threads of the pipe andshell, having an annular recess receiving the shoul der, and an annulargroove receiving the flange; substantially as described.

HENRY c. IIENLEY.

In presence of- A. M. EBERsoLE, BENJN. A. KNIGHT.

